<!DOCTYPE html>
<html class="test-wait">
<title>HTML Canvas reference: SVG filter using CSS font-relative line-height units</title>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
:root {
  font: 20px Ahem;
}

div {
  display: inline-block;
  width: 100px;
  height: 100px;
  background: green;
}

.r {
  background: red;
}
</style>
<div><div class="r" style="width: 48px;"></div></div><br>
<div><div class="r" style="width: 24px;"></div></div>
